Eyeglass-mounting.



G. A. BADER.

EYEGLASS MOUNTING.

APPLICATION FILED SEPT. 3. 1914.

Patented Nov. 10. 1914.

GUSTAV A. BAIJER, OF ROCHESTER, NEW YORK.

EYEGLASS-MOUINTING.

Specification of Letters Patent.

Patented Nov. 10, 1914;.

Application filed September 3, 1914. Serial N 0. 860,050.

To all whom it may concern:

Be it known that I, GUSTAV A. BADER, a citizen of the United States, and resident of Rochester, in the county of Monroe and State of New York, have invented certain new and useful Improvements in Eyeglass- Mountings, of which the following is a specification.

This invention relates to eyeglass-1nountings of the rigid-bridge type, in which the nose-clamps are mounted upon pivotally movable levers controlled by springs.

One object of the invention is to provide eyeglass-mountings of the kindin question with springs, for controlling the nose-guard levers, of such form that they may be securely mounted and supported in a novel and simple manner, and without the necessity of providing the usual posts for this purpose. To this end I employ a spring having, in addition to a resilient portion or member, a rigid member which may be seated in the perforation in the bridge or fixed part of the eyeglass-mounting, and in the preferred embodiment of the invention these members of the spring are formed integrally of a single piece of sheet-metal, which is bent to form a resilient member coiled in the form of a flat spiral, and a tubular rigid member projecting from the inner end of the spiral member.

Another object of the invention is to produce a spring which shall be at once effident in operation and compact in form, and to this end I employ, in addition to the members of the spring above described, a third member, preferably in the form of a flat spiral coil, which is located on the opposite side of the bridge from the first resilient member and connected with the opposite end of the rigid member.

Another object of the invention is to provide, in a simple manner, for pivoting the nose-guard lever, as well as controlling its movements, bythe use of a single spring device, and to this end, in the most complete embodiment of the invention, I employ the rigid spring-member hereinbefore referred to as means for pivotally connecting the nose-guard lever and the bridge of the eyeglass-mounting.

In the accompanying drawings :Figure 1 is a plan-view of a portion of an eyeglass mounting embodying the present invention, on a magnified scale; Fig. 2 is a front-elevation, partly in section on the line 2-2 in llig. 1; Fig. 3 is a detail-view, showing the form of the sheet-metal blank from which the nose-guard spring ofFigs. 1 and 2 is formed; Fig. I is a partial sectional front elevation, similar to Fig. 2, but showing a modified form of the invention; and Fig. 5 1s a bottom-view of the mounting shown in Fig. 4.

The invention is illustrated as embodied 111 an eyeglass-mounting having the usual with finger-pieces 14: and, at their rear ends) t with the usual nose-clamps 15. a

The spring in which the present invention partlcularly resides, as illustrated in Fi s. 1, 2 and 3, is formed preferably of a single blank of sheet-metal. It comprises a resilient portion 16 in the form of aflat spiral COll, this coil terminating, at its outer end, in a hook 17 which engages a U-shaped por= tion 18 of the nose-clamp lever. Projecting from the inner end of the coil 16 is a rigid member 19 in the form of a short tube, which projects downwardly through a per-' foration in the bridge 10. This rigid tubu lar member not only serves to retain the spring in its proper location on the bridge, but it is also employed, in the mounting illustrated, as a pivot to connect the noseclamp lever 13 with the bridge, the lever being, for this purpose, arranged to swing h in a central horizontal slot in the bridge, as shown in Fig. 2, and being perforated to receive the member 19, about which it turns loosely. To limit rotation of the rigid member 19 the spring has a third member 20 in the form of an arm, projecting, from the lower end of the rigid member, into engagement with a part of the lens-cl1p. Tlns arm 20 is necessarily more or less resilient, so

that it may permit a slight rotation of the rigidmember 19 in the bridge, but the essen tial function of the arm 20 is to limit or substantially prevent such rotation, so that the elasticity of the coil 16 may be usefullyem ployed to control the nose-clamp lever.

\Vhile the spring just described formed in various ways, I have shown, in Fig. 3, the outline of a sheet-metal blank from which it may be produced easily, and inexpensively. This blank comprises ,a long narrow part 21, which may be bent to form the spiral coil 16, and a short wide part 22, which is rolled over to produce the tubular rigid part 19. A third part 23 provides the material for the arm 20. In preparing the spring in the first place, however, the part is rolled up together with the part 22, so as to form substantially a continuation of the tube 19. In this form the spring may be attached to the bridge by passing the parts and 23 through the perforations in the bridge and the nose-clamp lever, but after the spring has been so placed in posi tion the part 23 is bent outwardly to form the arm 20, thus completing the spring and at the same time looking it in place on the bridge. In case the spring subsequently becomes broken or weakened in use, it may be readily removed upon again bending or rolling the arm 20 into tubular form.

While the third member or arm of the spring just described is not depended upon for any substantial resilient action, a more resilient member may be substituted therefor, particularly where it is desired to pro duce an eyeglass-mounting of compact form, in which the length of the straight or horizontal part of the bridge is reduced to a minimum. Such a construction is shown in F'gs. 4 and 5, in which the upper spiral coil 24 of the spring is connected, in the manner just described, with a tubular rigid member 25 which passes through the bridge and the nose-clamp lever, but in which the lows of this tubular member is cleft to receive the inner end of a second resilient spiral coilmember 26, of which the outer end forms :1 hook 27 seated against a part of the lensclip.

To hold the parts in operative position the lower extremity of the tubular member is flanged over the innermost turn of the coil 26. In the structure of Figs. 4- and 5, when the nose-clamp lever is moved pivotally the resilient and torsional movement of the spring is divided substantially equally between the upper and lower resilient coils 24-. and 26, owing to the fact that the tubular member 25 can turn freely in the bridge, and that this turning movement is promoted by the frictional engagement between the tubular member and the nose-clamp lever. Accordingly, it is necessary to provide, in each of the two resilient coils, for only onehalf of the movement which is imparted to the single coil ordinarily employed, and therefore these resilient coils can be made with fewer turns and of smaller diameter than a single coil, thus permitting a more compact form in the mounting as a whole. lVhile I have illustrated and particularly described my invention as embodied in springs formed of sheet-metal, it will be understood that it is not limited to this specific form and that, in general, it may be embodied in various forms within the nature of the invention as it is defined in the following claims.

I claim 1. In an eyeglass-mounting, the combination, with a nose-clamp lever and a bridge with which the lever 1s pivotally connected, the bridge having a perforation, of a spring,

for controlling the nose-clamp lever, comprising a resilient member lying at one side of the bridge and cooperating, at one end, with the nose-clamp lever, a rigid member projecting from the other end of said resilient member and extending through the perforation in the bridge, and a third member projecting, from said rigid member, into engagement with a fixed part of the mounting to prevent free rotation of the rigid member.

2. In an eyeglass-mounting, the combination, with a nose-clamp lever and a bridge with which the lever is pivotally connected, the bridge having a perforation, of a spring, for controlling the nose-clamp lever, comprising a resilient member lying at one side of the bridge and cooperating, at one end, with the nose-clamp lever, a rigid member projecting from the other end of said resilient member and extending through the perforation in the bridge, and a second resilient member projecting, from saidrigid member, into engagement with a fixed part of the mounting.

3. In an eyeglass-mounting, the combination, with a nose-clamp lever and a bridge, both having perforations, of a spring, for controlling the nose-clamp lever, comprising a flat spiral coil lying at one side of the bridge and cooperating, at its outer end, with the nose-clamp lever, a rigid member projecting from the inner end of the spiral and substantially normal to the plane thereof, said rigid member passing through the perforations in the nose-clamp lever and the bridge and constituting a pivotal connection forthese parts, and a third member proectlng, on the opposlte s1de of the bridge, from sa1d rigid member into engagement with a fixed part of the mounting, to prevent free rotation of the rigid member.

at. In an eyeglass-mounting, the combination, with a nose-clamp lever and a bridge with which the lever is pivotally connected, the bridge having a perforation, of a spring, for controlling the nose-clamp lever, comprising a sheet-metal blank bent to form a resilient flat spiral portion, of which the outer end cooperates with the nose-clamp lever, a tubular portion projecting from the inner end of the spiral portion and extendin ing into said opening in the bridge, and means for preventing free rotation of the tubular portion 1n sa1d opening.

5. In an eyeglassmounting, the combina- I tion, with a nose-clamp lever and a bridge,

both having perforations, of a spring, for

controlling the nose-clamp lever, compris' ing a sheet-metal blank bent to form a resilient fiat spiral portion lying at one side of the bridge, of which the outer end cooperates With the nose-clamp lever, a tubular member projecting from the inner end of the spiral member and extending through the openings in the nose-clamp lever and the bridge so as to constitute a pivotal connection therefor, and an arm projectin laterally from the opposite end of the tubular member, at the opposite side of the bridge, and engaging a fixed part of the mounting to prevent free rotation of the tubular member in said perforation.

6. A spring for eyeglass-mountings comprising, in an integral sheet-metal blank, a flat spiral resilient member, a tubular mem ber projecting from the inner end of the spiral member and approximately normal to the plane thereof, and means, at the end of the tubular member, for connecting it with another part of the eyeglass-mounting 0 prevent free rotation of the tubular mem- 7. A spring for eyeglass-mountings comprising, in an integral sheet-metal blank, a flat spiral resilient member, a tubular member projecting from the inner end of the spiral member and approximately normal to the plane thereof, and an arm projecting transversely from the end of the tubular member.

In testimony whereof, I afiix my signature in presence of tWo Witnesses.

GUSTAV A. BADER.

WVitnesses:

FARNUM F. DORSEY, D. GURNEE.

Copies 0! this patent may be obtained for five cents each, by addressing the "Commissioner of Patents,

' Washington, D. G. 

